Illinois.

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Air Programs
  6. Designation of Areas for Air Quality Planning Purposes
  7. Section 107 Attainment Status Designations
  8. Illinois.

Checkout our iOS App for a better way to browser and research.

§ 81.314 Illinois.

Illinois - TSP

Designated area Does not meet primary Does not meet secondary Cannot be classified Better than national standards
Cook County:
a. Lyons Township X X
b. The area bounded on the north by 79th Street, on the west by Interstate 57 between Sibley Boulevard and Interstate 94 and by Interstate 94 between Interstate 57 and 79th Street, on the south by Sibley Boulevard, and on the east by the Illinois/Indiana State line X X
LaSalle County:
Those portions of LaSalle Township located in the following Townships, ranges, and sections: T33N, R1E, S24; T33N, R1E, S25; T33N, R2E, S30; T33N, R2E, S31; and T33N, R1E, S36 X X
Those portions of Deer Park Township located in the following Townships, ranges, and sections: T32N, R1E, S1; T32N, R2E, S6; T33N, R1E, S24; T33N, R1E, S25; T33N, R2E, S30; T33N, R2E, S31; and T33N, R1E, S36 X
Madison County: Granite City Township and Nameoki Township X X
All other portions of Illinois counties X

Illinois - 1971 Sulfur Dioxide NAAQS

[Primary and Secondary]

Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
AQCR 65:
Fulton County X
Hancock County X
Henderson County X
Knox County X
McDonough County X
Mason County X
Peoria County X
Tazewell County X
Warren County X
Woodford County X
Lee County X
AQCR 66:
Champaign County X
Clark County X
Coles County X
Cumberland County X
De Witt County X
Douglas County X
Edgar County X
Ford County X
Iroquois County X
Livingston County X
McLean County X
Moultrie County X
Platt County X
Shelby County X
Vermilion County X
AQCR 67:
Cook County:
Bremer Twp X
Calumet Twp X
Thornton Twp X
Worth Twp X
All other Cook County twps X
Will County:
Channahon Twp X
Du Page Twp X
Joliet Twp X
Lockport Twp X
Troy Twp X
All other Will County twps X
Du Page County X
Grundy County X
Kane County X
Kankakee County X
Kendall County X
Lake County X
McHenry County X
AQCR 68:
Jo Daviess County X
AQCR 69:
Carroll County X
Henry County X
Mercer County X
Rock Island County X
Whiteside County X
AQCR 70:
Madison County:
Wood River Twp X
Alton Twp X
All other Madison twps X
Bond County X
Clinton County X
Monroe County X
Randolph County X
St. Clair County X
Washington County X
AQCR 71:
Bureau County:
Shelby Twp X
All other Bureau twps X
La Salle County X
Lee County X
Marshall County X
Putnam County X
Stark County X
AQCR 72:
Massac County X
Alexander County X
Johnson County X
Pope County X
Pulaski County X
Union County X
AQCR 73
Boone County X
De Kalb County X
Ogle County X
Stephenson X
Winnebago County X
AQCR 74:
Clay County X
Crawford County X
Edwards County X
Effingham County X
Fayette County X
Franklin County X
Gallatin County X
Hamilton County X
Hardin County X
Jackson County X
Jasper County X
Jefferson County X
Lawrence County X
Marion County X
Perry County X
Richland County X
Saline County X
Wabash County X
Wayne County X
White County X
Williamson County X
AQCR 75:
Christian County:
South Fork Twp X
All other twps X
Sangamon County:
Capital Twp X
Cooper Twp X
Cotton Hill Twp X
Rochester Twp X
Woodside Twp X
All other twps X
Adams County X
Brown County X
Calhoun County X
Cass County X
Greene County X
Jersey County X
Logan County X
Macon County X
Nacoupin County X
Menard County X
Montgomery County X
Morgan County X
Pike County X
Schuyler County X
Scott County X

Illinois - 2010 Sulfur Dioxide NAAQS

[Primary]

Designated area1 Designation
Date2 Type
Alton Township, IL 9/12/2016 Nonattainment.
Madison County (part)
Within Alton Township: Area east of Corporal Belchik Memorial Expressway, south of East Broadway, south of Route 3, and north of Route 143
Lemont, IL 5/26/2020 Attainment.
Cook County (part)
Lemont Township
Will County (part)
DuPage Township and Lockport Township
Pekin, IL 5/26/2020 Attainment.
Tazewell County (part)
Cincinnati Township and Pekin Township
Peoria County (part)
Hollis Township
Rest of State:
Adams County Attainment/Unclassifiable.
Alexander County Attainment/Unclassifiable.
Bond County Attainment/Unclassifiable.
Boone County Attainment/Unclassifiable.
Brown County Attainment/Unclassifiable.
Bureau County 9/12/2016 Attainment/Unclassifiable.
Calhoun County Attainment/Unclassifiable.
Carroll County Attainment/Unclassifiable.
Cass County Attainment/Unclassifiable.
Champaign County Attainment/Unclassifiable.
Christian County Attainment/Unclassifiable.
Clark County Attainment/Unclassifiable.
Clay County Attainment/Unclassifiable.
Clinton County Attainment/Unclassifiable.
Coles County Attainment/Unclassifiable.
Cook County (part) (remainder) Attainment/Unclassifiable.
Crawford County Attainment/Unclassifiable.
Cumberland County Attainment/Unclassifiable.
De Kalb County Attainment/Unclassifiable.
De Witt County Attainment/Unclassifiable.
Douglas County Attainment/Unclassifiable.
Du Page County Attainment/Unclassifiable.
Edgar County Attainment/Unclassifiable.
Edwards County Attainment/Unclassifiable.
Effingham County Attainment/Unclassifiable.
Fayette County Attainment/Unclassifiable.
Ford County Attainment/Unclassifiable.
Franklin County Attainment/Unclassifiable.
Fulton County Attainment/Unclassifiable.
Gallatin County Attainment/Unclassifiable.
Greene County Attainment/Unclassifiable.
Grundy County Attainment/Unclassifiable.
Hamilton County Attainment/Unclassifiable.
Hancock County Attainment/Unclassifiable.
Hardin County Attainment/Unclassifiable.
Henderson County Attainment/Unclassifiable.
Henry County Attainment/Unclassifiable.
Iroquois County Attainment/Unclassifiable.
Jackson County Attainment/Unclassifiable.
Jasper County 9/12/2016 Attainment/Unclassifiable.
Jefferson County Attainment/Unclassifiable.
Jersey County Attainment/Unclassifiable.
Jo Daviess County Attainment/Unclassifiable.
Johnson County Attainment/Unclassifiable.
Kane County Attainment/Unclassifiable.
Kankakee County Attainment/Unclassifiable.
Kendall County Attainment/Unclassifiable.
Knox County Attainment/Unclassifiable.
Lake County Attainment/Unclassifiable.
La Salle County Attainment/Unclassifiable.
Lawrence County Attainment/Unclassifiable.
Lee County Attainment/Unclassifiable.
Livingston County Attainment/Unclassifiable.
Logan County Attainment/Unclassifiable.
McDonough County Attainment/Unclassifiable.
McHenry County Attainment/Unclassifiable.
McLean County Attainment/Unclassifiable.
Macon County 4/30/2021 Attainment/Unclassifiable.
Macoupin County Attainment/Unclassifiable.
Madison County (part) (remainder)4 Attainment/Unclassifiable.
Marion County Attainment/Unclassifiable.
Marshall County Attainment/Unclassifiable.
Mason County Attainment/Unclassifiable.
Massac County 9/12/2016 Attainment/Unclassifiable.
Menard County Attainment/Unclassifiable.
Mercer County Attainment/Unclassifiable.
Monroe County Attainment/Unclassifiable.
Montgomery County Attainment/Unclassifiable.
Morgan County Attainment/Unclassifiable.
Moultrie County Attainment/Unclassifiable.
Ogle County Attainment/Unclassifiable.
Peoria County (part) (remainder) Attainment/Unclassifiable.
Perry County Attainment/Unclassifiable.
Piatt County Attainment/Unclassifiable.
Pike County Attainment/Unclassifiable.
Pope County Attainment/Unclassifiable.
Pulaski County Attainment/Unclassifiable.
Putnam County 9/12/2016 Attainment/Unclassifiable.
Randolph County Attainment/Unclassifiable.
Richland County Attainment/Unclassifiable.
Rock Island County Attainment/Unclassifiable.
St. Clair County Attainment/Unclassifiable.
Saline County Attainment/Unclassifiable.
Sangamon County Attainment/Unclassifiable.
Schuyler County Attainment/Unclassifiable.
Scott County Attainment/Unclassifiable.
Shelby County Attainment/Unclassifiable.
Stark County Attainment/Unclassifiable.
Stephenson County Attainment/Unclassifiable.
Tazewell County (part) (remainder) Attainment/Unclassifiable.
Union County Attainment/Unclassifiable.
Vermilion County Attainment/Unclassifiable.
Wabash County Attainment/Unclassifiable.
Warren County Attainment/Unclassifiable.
Washington County Attainment/Unclassifiable.
Wayne County Attainment/Unclassifiable.
White County Attainment/Unclassifiable.
Whiteside County Attainment/Unclassifiable.
Will County (part) (remainder) Attainment/Unclassifiable.
Williamson County 3 10/15/2019 Attainment/Unclassifiable.
Winnebago County Attainment/Unclassifiable.
Woodford County Attainment/Unclassifiable.

1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

2 This date is April 9, 2018, unless otherwise noted.

3 Williamson County was initially designated on September 12, 2016. The initial designation was reconsidered and modified on October 15, 2019.

4 A portion of Madison County, specifically all of Wood River Township, and the area in Chouteau Township north of Cahokia Diversion Channel, was designated attainment/unclassifiable on 9/12/16.

Illinois - Carbon Monoxide

Designated Area Designation Classification
Date1 Type Date1 Type
Adams County Unclassifiable/Attainment
Alexander County Unclassifiable/Attainment
Bond County Unclassifiable/Attainment
Boone County Unclassifiable/Attainment
Brown County Unclassifiable/Attainment
Bureau County Unclassifiable/Attainment
Calhoun County Unclassifiable/Attainment
Carroll County Unclassifiable/Attainment
Cass County Unclassifiable/Attainment
Champaign County Unclassifiable/Attainment
Christian County Unclassifiable/Attainment
Clark County Unclassifiable/Attainment
Clay County Unclassifiable/Attainment
Clinton County Unclassifiable/Attainment
Coles County Unclassifiable/Attainment
Cook County Unclassifiable/Attainment
Crawford County Unclassifiable/Attainment
Cumberland County Unclassifiable/Attainment
De Kalb County Unclassifiable/Attainment
De Witt County Unclassifiable/Attainment
Douglas County Unclassifiable/Attainment
Du Page County Unclassifiable/Attainment
Edgar County Unclassifiable/Attainment
Edwards County Unclassifiable/Attainment
Effingham County Unclassifiable/Attainment
Fayette County Unclassifiable/Attainment
Ford County Unclassifiable/Attainment
Franklin County Unclassifiable/Attainment
Fulton County Unclassifiable/Attainment
Gallatin County Unclassifiable/Attainment
Greene County Unclassifiable/Attainment
Grundy County Unclassifiable/Attainment
Hamilton County Unclassifiable/Attainment
Hancock County Unclassifiable/Attainment
Hardin County Unclassifiable/Attainment
Henderson County Unclassifiable/Attainment
Henry County Unclassifiable/Attainment
Iroquois County Unclassifiable/Attainment
Jackson County Unclassifiable/Attainment
Jasper County Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
Jersey County Unclassifiable/Attainment
Jo Daviess County Unclassifiable/Attainment
Johnson County Unclassifiable/Attainment
Kane County Unclassifiable/Attainment
Kankakee County Unclassifiable/Attainment
Kendall County Unclassifiable/Attainment
Knox County Unclassifiable/Attainment
Lake County Unclassifiable/Attainment
La Salle County Unclassifiable/Attainment
Lawrence County Unclassifiable/Attainment
Lee County Unclassifiable/Attainment
Livingston County Unclassifiable/Attainment
Logan County Unclassifiable/Attainment
Macon County Unclassifiable/Attainment
Macoupin County Unclassifiable/Attainment
Madison County Unclassifiable/Attainment
Marion County Unclassifiable/Attainment
Marshall County Unclassifiable/Attainment
Mason County Unclassifiable/Attainment
Massac County Unclassifiable/Attainment
McDonough County Unclassifiable/Attainment
McHenry County Unclassifiable/Attainment
McLean County Unclassifiable/Attainment
Menard County Unclassifiable/Attainment
Mercer County Unclassifiable/Attainment
Monroe County Unclassifiable/Attainment
Montgomery County Unclassifiable/Attainment
Morgan County Unclassifiable/Attainment
Moultrie County Unclassifiable/Attainment
Ogle County Unclassifiable/Attainment
Peoria County Unclassifiable/Attainment
Perry County Unclassifiable/Attainment
Piatt County Unclassifiable/Attainment
Pike County Unclassifiable/Attainment
Pope County Unclassifiable/Attainment
Pulaski County Unclassifiable/Attainment
Putnam County Unclassifiable/Attainment
Randolph County Unclassifiable/Attainment
Richland County Unclassifiable/Attainment
Rock Island County Unclassifiable/Attainment
St. Clair County Unclassifiable/Attainment
Saline County Unclassifiable/Attainment
Sangamon County Unclassifiable/Attainment
Schuyler County Unclassifiable/Attainment
Scott County Unclassifiable/Attainment
Shelby County Unclassifiable/Attainment
Stark County Unclassifiable/Attainment
Stephenson County Unclassifiable/Attainment
Tazewell County Unclassifiable/Attainment
Union County Unclassifiable/Attainment
Vermilion County Unclassifiable/Attainment
Wabash County Unclassifiable/Attainment
Warren County Unclassifiable/Attainment
Washington County Unclassifiable/Attainment
Wayne County Unclassifiable/Attainment
White County Unclassifiable/Attainment
Whiteside County Unclassifiable/Attainment
Will County Unclassifiable/Attainment
Williamson County Unclassifiable/Attainment
Winnebago County Unclassifiable/Attainment
Woodford County Unclassifiable/Attainment

1 This date is November 15, 1990, unless otherwise noted.

Illinois - Ozone (1-Hour Standard)3

Designated area Designation Classification
Date1 Type Date1 Type
Chicago-Gary-Lake County Area:
Cook County 11/15/90 Nonattainment 11/15/90 Severe-17.
Du Page County 11/15/90 Nonattainment 11/15/90 Severe-17.
Grundy County (part)
Aux Sable Township 11/15/90 Nonattainment 11/15/90 Severe-17.
Goose Lake Township 11/15/90 Nonattainment 11/15/90 Severe-17.
Kane County 11/15/90 Nonattainment 11/15/90 Severe-17.
Kendall County (part)
Oswego Township 11/15/90 Nonattainment 11/15/90 Severe-17.
Lake County 11/15/90 Nonattainment 11/15/90 Severe-17.
McHenry County 11/15/90 Nonattainment 11/15/90 Severe-17.
Will County 11/15/90 Nonattainment 11/15/90 Severe-17.
Jersey County Area:
Jersey County Attainment2
St. Louis Area:
Madison County 5/12/03 Attainment
Monroe County 5/12/03 Attainment
St. Clair County 5/12/03 Attainment
Adams County Unclassifiable/Attainment
Alexander County Unclassifiable/Attainment
Bond County Unclassifiable/Attainment
Boone County Unclassifiable/Attainment
Brown County Unclassifiable/Attainment
Bureau County Unclassifiable/Attainment
Calhoun County Unclassifiable/Attainment
Carroll County Unclassifiable/Attainment
Cass County Unclassifiable/Attainment
Champaign County Unclassifiable/Attainment
Christian County Unclassifiable/Attainment
Clark County Unclassifiable/Attainment
Clay County Unclassifiable/Attainment
Clinton County Unclassifiable/Attainment
Coles County Unclassifiable/Attainment
Crawford County Unclassifiable/Attainment
Cumberland County Unclassifiable/Attainment
De Kalb County Unclassifiable/Attainment
De Witt County Unclassifiable/Attainment
Douglas County Unclassifiable/Attainment
Edgar County Unclassifiable/Attainment
Edwards County Unclassifiable/Attainment
Effingham County Unclassifiable/Attainment
Fayette County Unclassifiable/Attainment
Ford County Unclassifiable/Attainment
Franklin County Unclassifiable/Attainment
Fulton County Unclassifiable/Attainment
Gallatin County Unclassifiable/Attainment
Greene County Unclassifiable/Attainment
Grundy County (part) All townships except Aux Sable and Goose Lake Unclassifiable/Attainment
Hamilton County Unclassifiable/Attainment
Hancock County Unclassifiable/Attainment
Hardin County Unclassifiable/Attainment
Henderson County Unclassifiable/Attainment
Henry County Unclassifiable/Attainment
Iroquois County Unclassifiable/Attainment
Jackson County Unclassifiable/Attainment
Jasper County Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
Jo Daviess County Unclassifiable/Attainment
Johnson County Unclassifiable/Attainment
Kankakee County Unclassifiable/Attainment
Kendall County (part) All townships except Oswego Unclassifiable/Attainment
Knox County Unclassifiable/Attainment
La Salle County Unclassifiable/Attainment
Lawrence County Unclassifiable/Attainment
Lee County Unclassifiable/Attainment
Livingston County Unclassifiable/Attainment
Logan County Unclassifiable/Attainment
Macon County Unclassifiable/Attainment
Macoupin County Unclassifiable/Attainment
Marion County Unclassifiable/Attainment
Marshall County Unclassifiable/Attainment
Mason County Unclassifiable/Attainment
Massac County Unclassifiable/Attainment
McDonough County Unclassifiable/Attainment
McLean County Unclassifiable/Attainment
Menard County Unclassifiable/Attainment
Mercer County Unclassifiable/Attainment
Montgomery County Unclassifiable/Attainment
Morgan County Unclassifiable/Attainment
Moultrie County Unclassifiable/Attainment
Ogle County Unclassifiable/Attainment
Peoria County Unclassifiable/Attainment
Perry County Unclassifiable/Attainment
Piatt County Unclassifiable/Attainment
Pike County Unclassifiable/Attainment
Pope County Unclassifiable/Attainment
Pulaski County Unclassifiable/Attainment
Putnam County Unclassifiable/Attainment
Randolph County Unclassifiable/Attainment
Richland County Unclassifiable/Attainment
Rock Island County Unclassifiable/Attainment
Saline County Unclassifiable/Attainment
Sangamon County Unclassifiable/Attainment
Schuyler County Unclassifiable/Attainment
Scott County Unclassifiable/Attainment
Shelby County Unclassifiable/Attainment
Stark County Unclassifiable/Attainment
Stephenson County Unclassifiable/Attainment
Tazewell County Unclassifiable/Attainment
Union County Unclassifiable/Attainment
Vermilion County Unclassifiable/Attainment
Wabash County Unclassifiable/Attainment
Warren County Unclassifiable/Attainment
Washington County Unclassifiable/Attainment
Wayne County Unclassifiable/Attainment
White County Unclassifiable/Attainment
Whiteside County Unclassifiable/Attainment
Williamson County Unclassifiable/Attainment
Winnebago County Unclassifiable/Attainment
Woodford County Unclassifiable/Attainment

1 This date is October 18, 2000, unless otherwise noted.

2 April 13, 1995.

3 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Illinois. The Jersey Co. and St. Louis areas are maintenance areas for the 1-hour NAAQS for purposes of 40 CFR part 51 subpart X.

Illinois - PM-10

Designated area Designation Classification
Date Type Date Type
Cook County
a. Lyons Township 11/21/05 Attainment
b. The area bounded on the north by 79th Street, on the west by Interstate 57 between Sibley Boulevard and Interstate 94 and by Interstate 94 between Interstate 57 and 79th Street, on the south by Sibley Boulevard, and on the east by the Illinois/Indiana State line 11/21/05 Attainment
LaSalle County 10/7/96 Attainment
Oglesby including the following Townships, ranges, and sections: T32N, R1E, S1; T32N, R2E, S6; T33N, R1E, S24; T33N, R1E, S25; T33N, R2E, S30; T33N, R2E, S31; and T33N, R1E, S36
Madison County
Granite City Township and Nameoki Township 5/11/98 Attainment
Rest of State 11/15/90 Unclassifiable

Illinois - 1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Designated area Designationa Classification
Date1 Type Date2 Type
Chicago-Gary-Lake County, IL-IN: 10/2/13 Attainment.
Cook County
DuPage County
Grundy County (part):
Goose Lake and Aux Sable Townships
Kane County
Kendall County (part):
Oswego Township
Lake County
McHenry County
Will County
St. Louis, MO-IL:
Madison County 5/28/2019 Attainment
Monroe County 5/28/2019 Attainment
Randolph County (part): Baldwin Village 5/28/2019 Attainment
St. Clair County 5/28/2019 Attainment
Rest of State:
Adams County Unclassifiable/Attainment.
Alexander County Unclassifiable/Attainment.
Bond County Unclassifiable/Attainment.
Boone County Unclassifiable/Attainment.
Brown County Unclassifiable/Attainment.
Bureau County Unclassifiable/Attainment.
Calhoun County Unclassifiable/Attainment.
Carroll County Unclassifiable/Attainment.
Cass County Unclassifiable/Attainment.
Champaign County Unclassifiable/Attainment.
Christian County Unclassifiable/Attainment.
Clark County Unclassifiable/Attainment.
Clay County Unclassifiable/Attainment.
Clinton County Unclassifiable/Attainment.
Coles County Unclassifiable/Attainment.
Crawford County Unclassifiable/Attainment.
Cumberland County Unclassifiable/Attainment.
DeKalb County Unclassifiable/Attainment.
De Witt County Unclassifiable/Attainment.
Douglas County Unclassifiable/Attainment.
Edgar County Unclassifiable/Attainment.
Edwards County Unclassifiable/Attainment.
Effingham County Unclassifiable/Attainment.
Fayette County Unclassifiable/Attainment.
Ford County Unclassifiable/Attainment.
Franklin County Unclassifiable/Attainment.
Fulton County Unclassifiable/Attainment.
Gallatin County Unclassifiable/Attainment.
Greene County Unclassifiable/Attainment.
Grundy County (remainder) Unclassifiable/Attainment.
Hamilton County Unclassifiable/Attainment.
Hancock County Unclassifiable/Attainment.
Hardin County Unclassifiable/Attainment.
Henderson County Unclassifiable/Attainment.
Henry County Unclassifiable/Attainment.
Iroquois County Unclassifiable/Attainment.
Jackson County Unclassifiable/Attainment.
Jasper County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Jersey County Unclassifiable/Attainment.
Jo Daviess County Unclassifiable/Attainment.
Johnson County Unclassifiable/Attainment.
Kankakee County Unclassifiable/Attainment.
Kendall County (remainder) Unclassifiable/Attainment.
Knox County Unclassifiable/Attainment.
La Salle County Unclassifiable/Attainment.
Lawrence County Unclassifiable/Attainment.
Lee County Unclassifiable/Attainment.
Livingston County Unclassifiable/Attainment.
Logan County Unclassifiable/Attainment.
McDonough County Unclassifiable/Attainment.
McLean County Unclassifiable/Attainment.
Macon County Unclassifiable/Attainment.
Macoupin County Unclassifiable/Attainment.
Marion County Unclassifiable/Attainment.
Marshall County Unclassifiable/Attainment.
Mason County Unclassifiable/Attainment.
Massac County Unclassifiable/Attainment.
Menard County Unclassifiable/Attainment.
Mercer County Unclassifiable/Attainment.
Montgomery County Unclassifiable/Attainment.
Morgan County Unclassifiable/Attainment.
Moultrie County Unclassifiable/Attainment.
Ogle County Unclassifiable/Attainment.
Peoria County Unclassifiable/Attainment.
Perry County Unclassifiable/Attainment.
Piatt County Unclassifiable/Attainment.
Pike County Unclassifiable/Attainment.
Pope County Unclassifiable/Attainment.
Pulaski County Unclassifiable/Attainment.
Putnam County Unclassifiable/Attainment.
Randolph County (remainder) Unclassifiable/Attainment.
Richland County Unclassifiable/Attainment.
Rock Island County Unclassifiable/Attainment.
Saline County Unclassifiable/Attainment.
Sangamon County Unclassifiable/Attainment.
Schuyler County Unclassifiable/Attainment.
Scott County Unclassifiable/Attainment.
Shelby County Unclassifiable/Attainment.
Stark County Unclassifiable/Attainment.
Stephenson County Unclassifiable/Attainment.
Tazewell County Unclassifiable/Attainment.
Union County Unclassifiable/Attainment.
Vermilion County Unclassifiable/Attainment.
Wabash County Unclassifiable/Attainment.
Warren County Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment.
Wayne County Unclassifiable/Attainment.
White County Unclassifiable/Attainment.
Whiteside County Unclassifiable/Attainment.
Williamson County Unclassifiable/Attainment.
Winnebago County Unclassifiable/Attainment.
Woodford County Unclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after January 5, 2005, unless otherwise noted.

2 This date is July 2, 2014, unless otherwise noted.

Illinois - 2012 Annual PM2.5 NAAQS

[Primary]

Designated area1 Designation Classification
Date2 Type Date2 Type
Chicago, IL-IN:
Cook County Unclassifiable/Attainment.
DuPage County Unclassifiable/Attainment.
Grundy County (part) Unclassifiable/Attainment.
Goose Lake and Aux Sable Townships Unclassifiable/Attainment.
Kane County Unclassifiable/Attainment.
Kendall County (part) Unclassifiable/Attainment.
Oswego Township Unclassifiable/Attainment.
Lake County Unclassifiable/Attainment.
McHenry County Unclassifiable/Attainment.
Will County Unclassifiable/Attainment.
Davenport-Moline-Rock Island, IL:
Rock Island County Unclassifiable/Attainment.
Henry County Unclassifiable/Attainment.
Mercer County Unclassifiable/Attainment.
St. Louis, MO-IL:
Madison County Unclassifiable/Attainment.
Monroe County Unclassifiable/Attainment.
Randolph County (part) Unclassifiable/Attainment.
Baldwin Village Unclassifiable/Attainment.
St. Clair County Unclassifiable/Attainment.
Rest of State:
Adams County Unclassifiable/Attainment.
Alexander County Unclassifiable/Attainment.
Bond County Unclassifiable/Attainment.
Boone County Unclassifiable/Attainment.
Brown County Unclassifiable/Attainment.
Bureau County Unclassifiable/Attainment.
Calhoun County Unclassifiable/Attainment.
Carroll County Unclassifiable/Attainment.
Cass County Unclassifiable/Attainment.
Champaign County Unclassifiable/Attainment.
Christian County Unclassifiable/Attainment.
Clark County Unclassifiable/Attainment.
Clay County Unclassifiable/Attainment.
Clinton County Unclassifiable/Attainment.
Coles County Unclassifiable/Attainment.
Crawford County Unclassifiable/Attainment.
Cumberland County Unclassifiable/Attainment.
DeKalb County Unclassifiable/Attainment.
De Witt County Unclassifiable/Attainment.
Douglas County Unclassifiable/Attainment.
Edgar County Unclassifiable/Attainment.
Edwards County Unclassifiable/Attainment.
Effingham County Unclassifiable/Attainment.
Fayette County Unclassifiable/Attainment.
Ford County Unclassifiable/Attainment.
Franklin County Unclassifiable/Attainment.
Fulton County Unclassifiable/Attainment.
Gallatin County Unclassifiable/Attainment.
Greene County Unclassifiable/Attainment.
Grundy County (remainder) Unclassifiable/Attainment.
Hamilton County Unclassifiable/Attainment.
Hancock County Unclassifiable/Attainment.
Hardin County Unclassifiable/Attainment.
Henderson County Unclassifiable/Attainment.
Iroquois County Unclassifiable/Attainment.
Jackson County Unclassifiable/Attainment.
Jasper County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Jersey County Unclassifiable/Attainment.
Jo Daviess County Unclassifiable/Attainment.
Johnson County Unclassifiable/Attainment.
Kankakee County Unclassifiable/Attainment.
Kendall County (remainder) Unclassifiable/Attainment.
Knox County Unclassifiable/Attainment.
La Salle County Unclassifiable/Attainment.
Lawrence County Unclassifiable/Attainment.
Lee County Unclassifiable/Attainment.
Livingston County Unclassifiable/Attainment.
Logan County Unclassifiable/Attainment.
McDonough County Unclassifiable/Attainment.
McLean County Unclassifiable/Attainment.
Macon County Unclassifiable/Attainment.
Macoupin County Unclassifiable/Attainment.
Marion County Unclassifiable/Attainment.
Marshall County Unclassifiable/Attainment.
Mason County Unclassifiable/Attainment.
Massac County Unclassifiable/Attainment.
Menard County Unclassifiable/Attainment.
Montgomery County Unclassifiable/Attainment.
Morgan County Unclassifiable/Attainment.
Moultrie County Unclassifiable/Attainment.
Ogle County Unclassifiable/Attainment.
Peoria County Unclassifiable/Attainment.
Perry County Unclassifiable/Attainment.
Piatt County Unclassifiable/Attainment.
Pike County Unclassifiable/Attainment.
Pope County Unclassifiable/Attainment.
Pulaski County Unclassifiable/Attainment.
Putnam County Unclassifiable/Attainment.
Randolph County (remainder) Unclassifiable/Attainment.
Richland County Unclassifiable/Attainment.
Saline County Unclassifiable/Attainment.
Sangamon County Unclassifiable/Attainment.
Schuyler County Unclassifiable/Attainment.
Scott County Unclassifiable/Attainment.
Shelby County Unclassifiable/Attainment.
Stark County Unclassifiable/Attainment.
Stephenson County Unclassifiable/Attainment.
Tazewell County Unclassifiable/Attainment.
Union County Unclassifiable/Attainment.
Vermilion County Unclassifiable/Attainment.
Wabash County Unclassifiable/Attainment.
Warren County Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment.
Wayne County Unclassifiable/Attainment.
White County Unclassifiable/Attainment.
Whiteside County Unclassifiable/Attainment.
Williamson County Unclassifiable/Attainment.
Winnebago County Unclassifiable/Attainment.
Woodford County Unclassifiable/Attainment.

1 Includes Indian Country located in each county or area, except as otherwise specified.

2 This date is January 28, 2019, unless otherwise noted.

Illinois - 1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designationa Classification
Date1 Type Date Type
Statewide:
Adams County Unclassifiable/Attainment.
Alexander County Unclassifiable/Attainment.
Bond County Unclassifiable/Attainment.
Boone County Unclassifiable/Attainment.
Brown County Unclassifiable/Attainment.
Bureau County Unclassifiable/Attainment.
Calhoun County Unclassifiable/Attainment.
Carroll County Unclassifiable/Attainment.
Cass County Unclassifiable/Attainment.
Champaign County Unclassifiable/Attainment.
Christian County Unclassifiable/Attainment.
Clark County Unclassifiable/Attainment.
Clay County Unclassifiable/Attainment.
Clinton County Unclassifiable/Attainment.
Coles County Unclassifiable/Attainment.
Cook County Unclassifiable/Attainment.
Crawford County Unclassifiable/Attainment.
Cumberland County Unclassifiable/Attainment.
DeKalb County Unclassifiable/Attainment.
De Witt County Unclassifiable/Attainment.
Douglas County Unclassifiable/Attainment.
DuPage County Unclassifiable/Attainment.
Edgar County Unclassifiable/Attainment.
Edwards County Unclassifiable/Attainment.
Effingham County Unclassifiable/Attainment.
Fayette County Unclassifiable/Attainment.
Ford County Unclassifiable/Attainment.
Franklin County Unclassifiable/Attainment.
Fulton County Unclassifiable/Attainment.
Gallatin County Unclassifiable/Attainment.
Greene County Unclassifiable/Attainment.
Grundy County Unclassifiable/Attainment.
Hamilton County Unclassifiable/Attainment.
Hancock County Unclassifiable/Attainment.
Hardin County Unclassifiable/Attainment.
Henderson County Unclassifiable/Attainment.
Henry County Unclassifiable/Attainment.
Iroquois County Unclassifiable/Attainment.
Jackson County Unclassifiable/Attainment.
Jasper County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Jersey County Unclassifiable/Attainment.
Jo Daviess County Unclassifiable/Attainment.
Johnson County Unclassifiable/Attainment.
Kane County Unclassifiable/Attainment.
Kankakee County Unclassifiable/Attainment.
Kendall County Unclassifiable/Attainment.
Knox County Unclassifiable/Attainment.
La Salle County Unclassifiable/Attainment.
Lake County Unclassifiable/Attainment.
Lawrence County Unclassifiable/Attainment.
Lee County Unclassifiable/Attainment.
Livingston County Unclassifiable/Attainment.
Logan County Unclassifiable/Attainment.
McDonough County Unclassifiable/Attainment.
McHenry County Unclassifiable/Attainment.
McLean County Unclassifiable/Attainment.
Macon County Unclassifiable/Attainment.
Macoupin County Unclassifiable/Attainment.
Madison County Unclassifiable/Attainment.
Marion County Unclassifiable/Attainment.
Marshall County Unclassifiable/Attainment.
Mason County Unclassifiable/Attainment.
Massac County Unclassifiable/Attainment.
Menard County Unclassifiable/Attainment.
Mercer County Unclassifiable/Attainment.
Monroe County Unclassifiable/Attainment.
Montgomery County Unclassifiable/Attainment.
Morgan County Unclassifiable/Attainment.
Moultrie County Unclassifiable/Attainment.
Ogle County Unclassifiable/Attainment.
Peoria County Unclassifiable/Attainment.
Perry County Unclassifiable/Attainment.
Piatt County Unclassifiable/Attainment.
Pike County Unclassifiable/Attainment.
Pope County Unclassifiable/Attainment.
Pulaski County Unclassifiable/Attainment.
Putnam County Unclassifiable/Attainment.
Randolph County Unclassifiable/Attainment.
Richland County Unclassifiable/Attainment.
Rock Island County Unclassifiable/Attainment.
St. Clair County Unclassifiable/Attainment.
Saline County Unclassifiable/Attainment.
Sangamon County Unclassifiable/Attainment.
Schuyler County Unclassifiable/Attainment.
Scott County Unclassifiable/Attainment.
Shelby County Unclassifiable/Attainment.
Stark County Unclassifiable/Attainment.
Stephenson County Unclassifiable/Attainment.
Tazewell County Unclassifiable/Attainment.
Union County Unclassifiable/Attainment.
Vermilion County Unclassifiable/Attainment.
Wabash County Unclassifiable/Attainment.
Warren County Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment.
Wayne County Unclassifiable/Attainment.
White County Unclassifiable/Attainment.
Whiteside County Unclassifiable/Attainment.
Will County Unclassifiable/Attainment.
Williamson County Unclassifiable/Attainment.
Winnebago County Unclassifiable/Attainment.
Woodford County Unclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after January 5, 2005, unless otherwise noted.

Illinois - 2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designationa Classification
Date1 Type Date Type
Statewide:
Adams County Unclassifiable/Attainment
Alexander County Unclassifiable/Attainment
Bond County Unclassifiable/Attainment
Boone County Unclassifiable/Attainment
Brown County Unclassifiable/Attainment
Bureau County Unclassifiable/Attainment
Calhoun County Unclassifiable/Attainment
Carroll County Unclassifiable/Attainment
Cass County Unclassifiable/Attainment
Champaign County Unclassifiable/Attainment
Christian County Unclassifiable/Attainment
Clark County Unclassifiable/Attainment
Clay County Unclassifiable/Attainment
Clinton County Unclassifiable/Attainment
Coles County Unclassifiable/Attainment
Cook County Unclassifiable/Attainment
Crawford County Unclassifiable/Attainment
Cumberland County Unclassifiable/Attainment
DeKalb County Unclassifiable/Attainment
De Witt County Unclassifiable/Attainment
Douglas County Unclassifiable/Attainment
DuPage County Unclassifiable/Attainment
Edgar County Unclassifiable/Attainment
Edwards County Unclassifiable/Attainment
Effingham County Unclassifiable/Attainment
Fayette County Unclassifiable/Attainment
Ford County Unclassifiable/Attainment
Franklin County Unclassifiable/Attainment
Fulton County Unclassifiable/Attainment
Gallatin County Unclassifiable/Attainment
Greene County Unclassifiable/Attainment
Grundy County Unclassifiable/Attainment
Hamilton County Unclassifiable/Attainment
Hancock County Unclassifiable/Attainment
Hardin County Unclassifiable/Attainment
Henderson County Unclassifiable/Attainment
Henry County Unclassifiable/Attainment
Iroquois County Unclassifiable/Attainment
Jackson County Unclassifiable/Attainment
Jasper County Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
Jersey County Unclassifiable/Attainment
Jo Daviess County Unclassifiable/Attainment
Johnson County Unclassifiable/Attainment
Kane County Unclassifiable/Attainment
Kankakee County Unclassifiable/Attainment
Kendall County Unclassifiable/Attainment
Knox County Unclassifiable/Attainment
La Salle County Unclassifiable/Attainment
Lake County Unclassifiable/Attainment
Lawrence County Unclassifiable/Attainment
Lee County Unclassifiable/Attainment
Livingston County Unclassifiable/Attainment
Logan County Unclassifiable/Attainment
McDonough County Unclassifiable/Attainment
McHenry County Unclassifiable/Attainment
McLean County Unclassifiable/Attainment
Macon County Unclassifiable/Attainment
Macoupin County Unclassifiable/Attainment
Madison County Unclassifiable/Attainment
Marion County Unclassifiable/Attainment
Marshall County Unclassifiable/Attainment
Mason County Unclassifiable/Attainment
Massac County Unclassifiable/Attainment
Menard County Unclassifiable/Attainment
Mercer County Unclassifiable/Attainment
Monroe County Unclassifiable/Attainment
Montgomery County Unclassifiable/Attainment
Morgan County Unclassifiable/Attainment
Moultrie County Unclassifiable/Attainment
Ogle County Unclassifiable/Attainment
Peoria County Unclassifiable/Attainment
Perry County Unclassifiable/Attainment
Piatt County Unclassifiable/Attainment
Pike County Unclassifiable/Attainment
Pope County Unclassifiable/Attainment
Pulaski County Unclassifiable/Attainment
Putnam County Unclassifiable/Attainment
Randolph County Unclassifiable/Attainment
Richland County Unclassifiable/Attainment
Rock Island County Unclassifiable/Attainment
St. Clair County Unclassifiable/Attainment
Saline County Unclassifiable/Attainment
Sangamon County Unclassifiable/Attainment
Schuyler County Unclassifiable/Attainment
Scott County Unclassifiable/Attainment
Shelby County Unclassifiable/Attainment
Stark County Unclassifiable/Attainment
Stephenson County Unclassifiable/Attainment
Tazewell County Unclassifiable/Attainment
Union County Unclassifiable/Attainment
Vermilion County Unclassifiable/Attainment
Wabash County Unclassifiable/Attainment
Warren County Unclassifiable/Attainment
Washington County Unclassifiable/Attainment
Wayne County Unclassifiable/Attainment
White County Unclassifiable/Attainment
Whiteside County Unclassifiable/Attainment
Will County Unclassifiable/Attainment
Williamson County Unclassifiable/Attainment
Winnebago County Unclassifiable/Attainment
Woodford County Unclassifiable/Attainment

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 30 days after November 13, 2009, unless otherwise noted.

Illinois - NO2 (1971 Annual Standard)

Designated area Does not meet primary standards Cannot be classified or better than national standards
AQCR 65:
Fulton County X
Hancock County X
Henderson County X
Knox County X
McDonough County X
Mason County X
Peoria County X
Tazewell County X
Warren County X
Woodford County X
Lee County X
AQCR 66:
Champaign County X
Clark County X
Coles County X
Cumberland County X
De Witt County X
Douglas County X
Edgar County X
Ford County X
Iroquois County X
Livingston County X
McLean County X
Moultrie County X
Piatt County X
Shelby County X
Vermilion County X
AQCR 67:
Cook County X
Du Page County X
Grundy County X
Kane County X
Kankakee County X
Kendall County X
Lake County X
McHenry County X
Will County X
AQCR 68:
Jo Daviess County X
AQCR 69:
Carroll County X
Henry County X
Mercer County X
Rock Island County X
Whiteside County X
AQCR 70:
Bond County X
Clinton County X
Madison County X
Monroe County X
Randolph County X
St. Clair County X
Washington County X
AQCR 71:
Bureau County X
La Salle County X
Lee County X
Marshall County X
Putnam County X
Stark County X
AQCR 72:
Alexander County X
Johnson County X
Massac County X
Pope County X
Pulaski County X
Union County X
AQCR 73:
Boone County X
De Kalb County X
Ogle County X
Stephenson County X
Winnebago County X
AQCR 74:
Clay County X
Crawford County X
Edwards County X
Effingham County X
Fayette County X
Franklin County X
Gallatin County X
Hamilton County X
Hardin County X
Jackson County X
Jasper County X
Jefferson County X
Lawrence County X
Marion County X
Perry County X
Richland County X
Saline County X
Wabash County X
Wayne County X
White County X
Williamson County X
AQCR 75:
Adams County X
Brown County X
Calhoun County X
Cass County X
Christian County X
Greene County X
Jersey County X
Logan County X
Macon County X
Macoupin County X
Menard County X
Montgomery County X
Morgan County X
Pike County X
Sangamon County X
Schuyler County X
Scott County X

Illinois - NO2 (2010 1-Hour Standard)

Designated area Designationa
Date1 Type
Adams County Unclassifiable/Attainment.
Alexander County Unclassifiable/Attainment.
Bond County Unclassifiable/Attainment.
Boone County Unclassifiable/Attainment.
Brown County Unclassifiable/Attainment.
Bureau County Unclassifiable/Attainment.
Calhoun County Unclassifiable/Attainment.
Carroll County Unclassifiable/Attainment.
Cass County Unclassifiable/Attainment.
Champaign County Unclassifiable/Attainment.
Christian County Unclassifiable/Attainment.
Clark County Unclassifiable/Attainment.
Clay County Unclassifiable/Attainment.
Clinton County Unclassifiable/Attainment.
Coles County Unclassifiable/Attainment.
Cook County Unclassifiable/Attainment.
Crawford County Unclassifiable/Attainment.
Cumberland County Unclassifiable/Attainment.
DeKalb County Unclassifiable/Attainment.
De Witt County Unclassifiable/Attainment.
Douglas County Unclassifiable/Attainment.
DuPage County Unclassifiable/Attainment.
Edgar County Unclassifiable/Attainment.
Edwards County Unclassifiable/Attainment.
Effingham County Unclassifiable/Attainment.
Fayette County Unclassifiable/Attainment.
Ford County Unclassifiable/Attainment.
Franklin County Unclassifiable/Attainment.
Fulton County Unclassifiable/Attainment.
Gallatin County Unclassifiable/Attainment.
Greene County Unclassifiable/Attainment.
Grundy County Unclassifiable/Attainment.
Hamilton County Unclassifiable/Attainment.
Hancock County Unclassifiable/Attainment.
Hardin County Unclassifiable/Attainment.
Henderson County Unclassifiable/Attainment.
Henry County Unclassifiable/Attainment.
Iroquois County Unclassifiable/Attainment.
Jackson County Unclassifiable/Attainment.
Jasper County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Jersey County Unclassifiable/Attainment.
Jo Daviess County Unclassifiable/Attainment.
Johnson County Unclassifiable/Attainment.
Kane County Unclassifiable/Attainment.
Kankakee County Unclassifiable/Attainment.
Kendall County Unclassifiable/Attainment.
Knox County Unclassifiable/Attainment.
La Salle County Unclassifiable/Attainment.
Lake County Unclassifiable/Attainment.
Lawrence County Unclassifiable/Attainment.
Lee County Unclassifiable/Attainment.
Livingston County Unclassifiable/Attainment.
Logan County Unclassifiable/Attainment.
Madison County Unclassifiable/Attainment.
McDonough County Unclassifiable/Attainment.
McLean County Unclassifiable/Attainment.
Macon County Unclassifiable/Attainment.
Macoupin County Unclassifiable/Attainment.
Marion County Unclassifiable/Attainment.
Marshall County Unclassifiable/Attainment.
Mason County Unclassifiable/Attainment.
Massac County Unclassifiable/Attainment.
McHenry County Unclassifiable/Attainment.
Menard County Unclassifiable/Attainment.
Mercer County Unclassifiable/Attainment.
Monroe County Unclassifiable/Attainment.
Montgomery County Unclassifiable/Attainment.
Morgan County Unclassifiable/Attainment.
Moultrie County Unclassifiable/Attainment.
Ogle County Unclassifiable/Attainment.
Peoria County Unclassifiable/Attainment.
Perry County Unclassifiable/Attainment.
Piatt County Unclassifiable/Attainment.
Pike County Unclassifiable/Attainment.
Pope County Unclassifiable/Attainment.
Pulaski County Unclassifiable/Attainment.
Putnam County Unclassifiable/Attainment.
Randolph County Unclassifiable/Attainment.
Richland County Unclassifiable/Attainment.
Rock Island County Unclassifiable/Attainment.
St. Clair County Unclassifiable/Attainment.
Saline County Unclassifiable/Attainment.
Sangamon County Unclassifiable/Attainment.
Schuyler County Unclassifiable/Attainment.
Scott County Unclassifiable/Attainment.
Shelby County Unclassifiable/Attainment.
Stark County Unclassifiable/Attainment.
Stephenson County Unclassifiable/Attainment.
Tazewell County Unclassifiable/Attainment.
Union County Unclassifiable/Attainment.
Vermilion County Unclassifiable/Attainment.
Wabash County Unclassifiable/Attainment.
Warren County Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment.
Wayne County Unclassifiable/Attainment.
White County Unclassifiable/Attainment.
Whiteside County Unclassifiable/Attainment.
Will County Unclassifiable/Attainment.
Williamson County Unclassifiable/Attainment.
Winnebago County Unclassifiable/Attainment.
Woodford County Unclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after October 31, 2011, unless otherwise noted.

Illinois - 1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designationa Category/classification
Date1 Type Date1 Type
Chicago-Gary-Lake County, IL-IN:
Cook County 8/13/2012
DuPage County Attainment.
Grundy County (part)
Aux Sable Township
Goose Lake Township
Kane County
Kendall County (part)
Oswego Township
Lake County
McHenry County
Will County
St. Louis, MO-IL:
Jersey County 6/12/2012 Attainment
Madison County 6/12/2012 Attainment
Monroe County 6/12/2012 Attainment
St. Clair County 6/12/2012 Attainment
Rest of State
Adams County Unclassifiable/Attainment
Alexander County Unclassifiable/Attainment
Bond County Unclassifiable/Attainment
Boone County Unclassifiable/Attainment
Brown County Unclassifiable/Attainment
Bureau County Unclassifiable/Attainment
Calhoun County Unclassifiable/Attainment
Carroll County Unclassifiable/Attainment
Cass County Unclassifiable/Attainment
Champaign County Unclassifiable/Attainment
Christian County Unclassifiable/Attainment
Clark County Unclassifiable/Attainment
Clay County Unclassifiable/Attainment
Clinton County Unclassifiable/Attainment
Coles County Unclassifiable/Attainment
Crawford County Unclassifiable/Attainment
Cumberland County Unclassifiable/Attainment
De Witt County Unclassifiable/Attainment
DeKalb County Unclassifiable/Attainment
Douglas County Unclassifiable/Attainment
Edgar County Unclassifiable/Attainment
Edwards County Unclassifiable/Attainment
Effingham County Unclassifiable/Attainment
Fayette County Unclassifiable/Attainment
Ford County Unclassifiable/Attainment
Franklin County Unclassifiable/Attainment
Fulton County Unclassifiable/Attainment
Gallatin County Unclassifiable/Attainment
Greene County Unclassifiable/Attainment
Grundy County (part) Unclassifiable/Attainment
All townships except Aux Sable and Goose Lake.
Hamilton County Unclassifiable/Attainment
Hancock County Unclassifiable/Attainment
Hardin County Unclassifiable/Attainment
Henderson County Unclassifiable/Attainment
Henry County Unclassifiable/Attainment
Iroquois County Unclassifiable/Attainment
Jackson County Unclassifiable/Attainment
Jasper County Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
Jo Daviess County Unclassifiable/Attainment
Johnson County Unclassifiable/Attainment
Kankakee County Unclassifiable/Attainment
Kendall County (part) Unclassifiable/Attainment
All townships except Oswego
Knox County Unclassifiable/Attainment
La Salle County Unclassifiable/Attainment
Lawrence County Unclassifiable/Attainment
Lee County Unclassifiable/Attainment
Livingston County Unclassifiable/Attainment
Logan County Unclassifiable/Attainment
Macon County Unclassifiable/Attainment
Macoupin County Unclassifiable/Attainment
Marion County Unclassifiable/Attainment
Marshall County Unclassifiable/Attainment
Mason County Unclassifiable/Attainment
Massac County Unclassifiable/Attainment
McDonough County Unclassifiable/Attainment
McLean County Unclassifiable/Attainment
Menard County Unclassifiable/Attainment
Mercer County Unclassifiable/Attainment
Montgomery County Unclassifiable/Attainment
Morgan County Unclassifiable/Attainment
Moultrie County Unclassifiable/Attainment
Ogle County Unclassifiable/Attainment
Peoria County Unclassifiable/Attainment
Perry County Unclassifiable/Attainment
Piatt County Unclassifiable/Attainment
Pike County Unclassifiable/Attainment
Pope County Unclassifiable/Attainment
Pulaski County Unclassifiable/Attainment
Putnam County Unclassifiable/Attainment
Randolph County Unclassifiable/Attainment
Richland County Unclassifiable/Attainment
Rock Island County Unclassifiable/Attainment
Saline County Unclassifiable/Attainment
Sangamon County Unclassifiable/Attainment
Schuyler County Unclassifiable/Attainment
Scott County Unclassifiable/Attainment
Shelby County Unclassifiable/Attainment
Stark County Unclassifiable/Attainment
Stephenson County Unclassifiable/Attainment
Tazewell County Unclassifiable/Attainment
Union County Unclassifiable/Attainment
Vermilion County Unclassifiable/Attainment
Wabash County Unclassifiable/Attainment
Warren County Unclassifiable/Attainment
Washington County Unclassifiable/Attainment
Wayne County Unclassifiable/Attainment
White County Unclassifiable/Attainment
Whiteside County Unclassifiable/Attainment
Williamson County Unclassifiable/Attainment
Winnebago County Unclassifiable/Attainment
Woodford County Unclassifiable/Attainment

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is June 15, 2004, unless otherwise noted.

Illinois - 2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation Classification
Date1 Type Date1 Type
Chicago-Naperville, IL-IN-WI:2 Nonattainment 9/23/2019 Serious.
Cook County
DuPage County
Grundy County (part)
Aux Sable Township
Goose Lake Township
Kane County
Kendall County (part)
Oswego Township
Lake County
McHenry County
Will County
St. Louis-St. Charles-Farmington, MO-IL:2
Madison County, Monroe County, St. Clair County 3/1/2018 Attainment
Adams County3 Unclassifiable/Attainment
Alexander County3 Unclassifiable/Attainment
Bond County3 Unclassifiable/Attainment
Boone County3 Unclassifiable/Attainment
Brown County3 Unclassifiable/Attainment
Bureau County3 Unclassifiable/Attainment
Calhoun County3 Unclassifiable/Attainment
Carroll County3 Unclassifiable/Attainment
Cass County3 Unclassifiable/Attainment
Champaign County3 Unclassifiable/Attainment
Christian County3 Unclassifiable/Attainment
Clark County3 Unclassifiable/Attainment
Clay County3 Unclassifiable/Attainment
Clinton County3 Unclassifiable/Attainment
Coles County3 Unclassifiable/Attainment
Crawford County3 Unclassifiable/Attainment
Cumberland County3 Unclassifiable/Attainment
DeKalb County3 Unclassifiable/Attainment
De Witt County3 Unclassifiable/Attainment
Douglas County3 Unclassifiable/Attainment
Edgar County3 Unclassifiable/Attainment
Edwards County3 Unclassifiable/Attainment
Effingham County3 Unclassifiable/Attainment
Fayette County3 Unclassifiable/Attainment
Ford County3 Unclassifiable/Attainment
Franklin County3 Unclassifiable/Attainment
Fulton County3 Unclassifiable/Attainment
Gallatin County3 Unclassifiable/Attainment
Greene County3 Unclassifiable/Attainment
Grundy County (remainder)3 Unclassifiable/Attainment
Hamilton County3 Unclassifiable/Attainment
Hancock County3 Unclassifiable/Attainment
Hardin County3 Unclassifiable/Attainment
Henderson County3 Unclassifiable/Attainment
Henry County3 Unclassifiable/Attainment
Iroquois County3 Unclassifiable/Attainment
Jackson County3 Unclassifiable/Attainment
Jasper County3 Unclassifiable/Attainment
Jefferson County3 Unclassifiable/Attainment
Jersey County3 Unclassifiable/Attainment
Jo Daviess County3 Unclassifiable/Attainment
Johnson County3 Unclassifiable/Attainment
Kankakee County3 Unclassifiable/Attainment
Kendall County (remainder) Unclassifiable/Attainment
Knox County3 Unclassifiable/Attainment
La Salle County3 Unclassifiable/Attainment
Lawrence County3 Unclassifiable/Attainment
Lee County3 Unclassifiable/Attainment
Livingston County3 Unclassifiable/Attainment
Logan County3 Unclassifiable/Attainment
McDonough County3 Unclassifiable/Attainment
McLean County3 Unclassifiable/Attainment
Macon County3 Unclassifiable/Attainment
Macoupin County3 Unclassifiable/Attainment
Marion County3 Unclassifiable/Attainment
Marshall County3 Unclassifiable/Attainment
Mason County3 Unclassifiable/Attainment
Massac County3 Unclassifiable/Attainment
Menard County3 Unclassifiable/Attainment
Mercer County3 Unclassifiable/Attainment
Montgomery County3 Unclassifiable/Attainment
Morgan County3 Unclassifiable/Attainment
Moultrie County3 Unclassifiable/Attainment
Ogle County3 Unclassifiable/Attainment
Peoria County3 Unclassifiable/Attainment
Perry County3 Unclassifiable/Attainment
Piatt County3 Unclassifiable/Attainment
Pike County3 Unclassifiable/Attainment
Pope County3 Unclassifiable/Attainment
Pulaski County3 Unclassifiable/Attainment
Putnam County3 Unclassifiable/Attainment
Randolph County3 Unclassifiable/Attainment
Richland County3 Unclassifiable/Attainment
Rock Island County3 Unclassifiable/Attainment
Saline County3 Unclassifiable/Attainment
Sangamon County3 Unclassifiable/Attainment
Schuyler County3 Unclassifiable/Attainment
Scott County3 Unclassifiable/Attainment
Shelby County3 Unclassifiable/Attainment
Stark County3 Unclassifiable/Attainment
Stephenson County3 Unclassifiable/Attainment
Tazewell County3 Unclassifiable/Attainment
Union County3 Unclassifiable/Attainment
Vermilion County3 Unclassifiable/Attainment
Wabash County3 Unclassifiable/Attainment
Warren County3 Unclassifiable/Attainment
Washington County3 Unclassifiable/Attainment
Wayne County3 Unclassifiable/Attainment
White County3 Unclassifiable/Attainment
Whiteside County3 Unclassifiable/Attainment
Williamson County3 Unclassifiable/Attainment
Winnebago County3 Unclassifiable/Attainment
Woodford County3 Unclassifiable/Attainment

1 This date is July 20, 2012, unless otherwise noted.

2 Excludes Indian country located in each area, unless otherwise noted.

3 Includes any Indian country in each county or area, unless otherwise specified.

4 Attainment date is extended to July 20, 2016.

Illinois - 2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area1 Designation Classification
Date2 Type Date2 Type
Chicago, IL-IN-WI Nonattainment Marginal.
Cook County
DuPage County
Grundy County (part)
Aux Sable Township and Goose Lake Township
Kane County
Kendall County (part)
Oswego Township
Lake County
McHenry County July 14, 20213
Will County
St. Louis, MO-IL Nonattainment Marginal.
Madison County
Monroe County July 14, 20213
St. Clair County
Adams County 1/16/18 Attainment/Unclassifiable
Alexander County 1/16/18 Attainment/Unclassifiable
Bond County Attainment/Unclassifiable
Boone County 1/16/18 Attainment/Unclassifiable
Brown County 1/16/18 Attainment/Unclassifiable
Bureau County Attainment/Unclassifiable
Calhoun County Attainment/Unclassifiable
Carroll County 1/16/18 Attainment/Unclassifiable
Cass County 1/16/18 Attainment/Unclassifiable
Champaign County 1/16/18 Attainment/Unclassifiable
Christian County 1/16/18 Attainment/Unclassifiable
Clark County 1/16/18 Attainment/Unclassifiable
Clay County 1/16/18 Attainment/Unclassifiable
Clinton County Attainment/Unclassifiable
Coles County 1/16/18 Attainment/Unclassifiable
Crawford County 1/16/18 Attainment/Unclassifiable
Cumberland County 1/16/18 Attainment/Unclassifiable
De Kalb County Attainment/Unclassifiable
De Witt County 1/16/18 Attainment/Unclassifiable
Douglas County 1/16/18 Attainment/Unclassifiable
Edgar County 1/16/18 Attainment/Unclassifiable
Edwards County 1/16/18 Attainment/Unclassifiable
Effingham County 1/16/18 Attainment/Unclassifiable
Fayette County 1/16/18 Attainment/Unclassifiable
Ford County 1/16/18 Attainment/Unclassifiable
Franklin County 1/16/18 Attainment/Unclassifiable
Fulton County 1/16/18 Attainment/Unclassifiable
Gallatin County 1/16/18 Attainment/Unclassifiable
Greene County 1/16/18 Attainment/Unclassifiable
Grundy County (part) remainder Attainment/Unclassifiable
Hamilton County 1/16/18 Attainment/Unclassifiable
Hancock County 1/16/18 Attainment/Unclassifiable
Hardin County 1/16/18 Attainment/Unclassifiable
Henderson County 1/16/18 Attainment/Unclassifiable
Henry County 1/16/18 Attainment/Unclassifiable
Iroquois County 1/16/18 Attainment/Unclassifiable
Jackson County 1/16/18 Attainment/Unclassifiable
Jasper County 1/16/18 Attainment/Unclassifiable
Jefferson County 1/16/18 Attainment/Unclassifiable
Jersey County Attainment/Unclassifiable
Jo Daviess County 1/16/18 Attainment/Unclassifiable
Johnson County 1/16/18 Attainment/Unclassifiable
Kankakee County Attainment/Unclassifiable
Kendall County (part) remainder Attainment/Unclassifiable
Knox County 1/16/18 Attainment/Unclassifiable
La Salle County Attainment/Unclassifiable
Lawrence County 1/16/18 Attainment/Unclassifiable
Lee County 1/16/18 Attainment/Unclassifiable
Livingston County 1/16/18 Attainment/Unclassifiable
Logan County 1/16/18 Attainment/Unclassifiable
Macon County 1/16/18 Attainment/Unclassifiable
Macoupin County Attainment/Unclassifiable
Marion County Attainment/Unclassifiable
Marshall County 1/16/18 Attainment/Unclassifiable
Mason County 1/16/18 Attainment/Unclassifiable
Massac County 1/16/18 Attainment/Unclassifiable
McDonough County 1/16/18 Attainment/Unclassifiable
McLean County 1/16/18 Attainment/Unclassifiable
Menard County 1/16/18 Attainment/Unclassifiable
Mercer County 1/16/18 Attainment/Unclassifiable
Montgomery County 1/16/18 Attainment/Unclassifiable
Morgan County 1/16/18 Attainment/Unclassifiable
Moultrie County 1/16/18 Attainment/Unclassifiable
Ogle County 1/16/18 Attainment/Unclassifiable
Peoria County 1/16/18 Attainment/Unclassifiable
Perry County 1/16/18 Attainment/Unclassifiable
Piatt County 1/16/18 Attainment/Unclassifiable
Pike County 1/16/18 Attainment/Unclassifiable
Pope County 1/16/18 Attainment/Unclassifiable
Pulaski County 1/16/18 Attainment/Unclassifiable
Putnam County Attainment/Unclassifiable
Randolph County 1/16/18 Attainment/Unclassifiable
Richland County 1/16/18 Attainment/Unclassifiable
Rock Island County 1/16/18 Attainment/Unclassifiable
Saline County 1/16/18 Attainment/Unclassifiable
Sangamon County 1/16/18 Attainment/Unclassifiable
Schuyler County 1/16/18 Attainment/Unclassifiable
Scott County 1/16/18 Attainment/Unclassifiable
Shelby County 1/16/18 Attainment/Unclassifiable
Stark County 1/16/18 Attainment/Unclassifiable
Stephenson County 1/16/18 Attainment/Unclassifiable
Tazewell County 1/16/18 Attainment/Unclassifiable
Union County 1/16/18 Attainment/Unclassifiable
Vermilion County 1/16/18 Attainment/Unclassifiable
Wabash County 1/16/18 Attainment/Unclassifiable
Warren County 1/16/18 Attainment/Unclassifiable
Washington County 1/16/18 Attainment/Unclassifiable
Wayne County 1/16/18 Attainment/Unclassifiable
White County 1/16/18 Attainment/Unclassifiable
Whiteside County 1/16/18 Attainment/Unclassifiable
Williamson County 1/16/18 Attainment/Unclassifiable
Winnebago County 1/16/18 Attainment/Unclassifiable
Woodford County 1/16/18 Attainment/Unclassifiable

1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

2 This date is August 3, 2018, unless otherwise noted.

3 EPA revised the nonattainment boundary in response to a court decision, which did not vacate any designations for the 2015 ozone NAAQS, but which remanded the designation for the identified county. Because this additional area is part of a previously designated nonattainment area, the implementation dates for the overall nonattainment area (e.g., the August 3, 2021 attainment date) remain unchanged regardless of this later designation date.

Illinois - 2008 Lead NAAQS

Designated area Designation for the 2008 NAAQSa
Date1 Type
Chicago, IL:
Cook County (part) 3/28/18 Attainment.
Area bounded by Damen Ave. on the west, Roosevelt Rd. on the north, the Dan Ryan Expressway on the east, and the Stevenson Expressway on the south
Granite City, IL:
Madison County (part) 3/28/18 Attainment.
Area is bounded by Granite City Township and Venice Township
Rest of State Unclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 December 31, 2011 unless otherwise noted.

[43 FR 8964, Mar. 3, 1978]

Editorial Note

Editorial Notes:

1. For Federal Register citations affecting § 81.314, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

2. At 80 FR 2233, Jan. 15, 2015, § 81.314 was amended by adding a table entitled “Illinois - 2012 Annual PM2.5 NAAQS (Primary)” following the table “Illinois - 1997 Annual PM2.5 NAAQS [Primary and secondary]”; however, the table appearing in the text was entitled “Illinois - 2012 24-Hour PM2.5 NAAQS (Primary)”.


Download our app to see the most-to-date content.